...separates one watershed from another? 1. How would you use a topographic map to calculate the amount of water a certain watershed could collect and contribute to its river?
2. How is it possible for water to get in the gravel and below the clay, even though clay is watertight?
3. If water is drawn out faster than the aquifer can recharge, what happens to the well?
2. How is it possible for water to get in the gravel and below the clay, even though clay is watertight?
3. If water is drawn out faster than the aquifer can recharge, what happens to the well?